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    Workshop
    "access to everything" .... even the coffee machine and microwave just round the corner behind the bookcase!πŸ˜‹ And a TV/
    Monitor
    attached via HDMI cable to my PC in the other room - so I can hear the "Honks" and keep track of what U Lot are up toπŸ˜‰ 😎
    1 month ago by RNinMunich
    Forum
    Air Sea Rescue Launch 123
    ".....If you are using NiMH or LiPo than I can also heartily recommend a little Capacity Checker/
    Monitor
    , available all over fleaBay for a few quid......The Checker can then tell you a bit more, e.g. if you've got a duff cell, which will collapse under load even if the other cells are still good!" Interesting. But, as far as I can see, these checkers only provide total voltage for NiMH - just like a voltmeter. The individual cell info is just for Lipo or LiFE. Or am I reading their adverts incorrectly?
    3 months ago by DodgyGeezer
    Forum
    Air Sea Rescue Launch 123
    My pleasure Ian, If you are using NiMH or LiPo than I can also heartily recommend a little Capacity Checker/
    Monitor
    , available all over fleaBay for a few quid. See attached pic. The car bulb trick is just to see how the battery reacts to a load. The Checker can then tell you a bit more, e.g. if you've got a duff cell, which will collapse under load even if the other cells are still good!! Happy sailingπŸ‘ Cheers, Doug 😎
    3 months ago by RNinMunich
    Forum
    Motor, speed controller
    All got off ebay. The drone boys use this sort of thing extensively. Go there and google the items below. I have added approximate current prices - but I can recall getting some items considerably cheaper.... FPV Mini Digital Video Camera - about Β£6 Eachine RC832 Boscam 5.8G 48CH FPV Receiver Combo - 5.8Ghz Tx and Rx - about Β£14.80 7 inch Professional FPV Aerial Photography
    Monitor
    For Ground Station - about Β£17.50 FPV-Pro-DVR-Mini-Video-Audio-Recorder - about Β£11.30 Plastic-FPV-PT-Pan-Tilt-Camera-Platform - 99p! I also got an extra stick - about Β£10, a nice plastic box - about Β£25(!), and various connectors, switches, etc. The box contains a gel battery for the video, which can power the main R/C transmitter down the connector line - that's what the buttons and voltmeter on the panel are for... Note that the video transmitter runs hot - most of them seem to - which is fine on a drone, but thermal control needs some consideration on a boat. You can see a little heat-sink that I added.... P.S. Oh, and you'll need to arrange a 180 deg servo for the panning... P.P.S. You might want to consider a clover-leaf aerial. That enables what they call 'circular polarity' transmission, which is really useful for drones when the transmitting aerial is performing contortions in the air. For boats, a vertical aerial pumping out vertically-polarised waves may suffer from 'bounce' off the water surface, which turns the reflected waves horizontal. But these are very cheap anyway, and can be experimented with - a bit like different propellers...
    5 months ago by DodgyGeezer


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